I'm pretty sure we could give you a ton of videos back showing how stupid the whole ISS filming is.
Or a couple of videos showing how ridiculous people sound when they try to discredit mankind's achievements?
I didn't have time for the first video but I watched the first 5 minutes of the second video and that's all I needed to dismiss anything the creator of the vid has to say.
First, they were confused why the astronaut was floating around randomly. Is it really hard to believe she gave herself a little boost with her leg muscles? Or is that too easy of an explanation?
Second, the periods of weightlessness in the video were obviously too long for a zero-G airplane. A plane can't sustain 45 seconds of plunging, at least not without abruptly pulling up to avoid crashing, which there is no indication of happening in the vid.
Third, there are consistent comments like "You're not really in space" or "Because you're in a zero-G plane" without a shred of evidence to back them up.
This video didn't help your cause...